Display rack



FIG. 1 is a front perspective view of a display rack showing our new design;

FIG. 2 is a back perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a right side view thereof, the left side view being a mirror image; and,

FIG. 6 is a top view thereof.

The broken lines shown in the drawings are included for purposes of illustrating portions of the display rack and form no part of the claimed design. 

CLAIM The ornamental design for a display rack, as shown and described. 